Suppose that X and Y have a joint pdf f (x, y) = (2/3)(x + 1), for 0 < x < 1,0 < y < 1, zero otherwise. (a) Find fx(x) (b) Find fy (у) (c) Find f(y|x) (d) Find P(X < 2Y < 3X) (e) Are X and Y independent? (f) Find E(Y|X) (g) Find Var(Y) (h) Find Var(E(Y|X)).

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Suppose that X and Y have a joint pdf
f (x, y) = (2/3)(x + 1), for 0 < x < 1,0 < y < 1,
zero otherwise.
(a) Find fx(x)
(b) Find fy (у)
(c) Find f(y|x)
(d) Find P(X < 2Y < 3X)
(e) Are X and Y independent?
(f) Find E(Y|X)
(g) Find Var(Y)
(h) Find Var(E(Y|X))
(i) Find E(Var(Y|X))
(j) Find a pdf of Y/X.
(k) Find P(1/2 <Y/X < 3/2) using the pdf of Y/X.
Transcribed Image Text:Suppose that X and Y have a joint pdf f (x, y) = (2/3)(x + 1), for 0 < x < 1,0 < y < 1, zero otherwise. (a) Find fx(x) (b) Find fy (у) (c) Find f(y|x) (d) Find P(X < 2Y < 3X) (e) Are X and Y independent? (f) Find E(Y|X) (g) Find Var(Y) (h) Find Var(E(Y|X)) (i) Find E(Var(Y|X)) (j) Find a pdf of Y/X. (k) Find P(1/2 <Y/X < 3/2) using the pdf of Y/X.
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